Description Usage Arguments Details Value Author(s) See Also Examples
The function findintersects
calculates the locations of the bearing intersections from radio telemetry studies.
as.data.frame
can be used to convert an object inheriting the class intersect
into a data.frame
.
plot
allows a graphical display of the calculated intersection locations.
1 2 3 4 5 6 7 8 9 10 |
x |
An object inhering the class |
add |
A logical specification for whether to plot locations onto an existing plot window. |
pch |
Either an integer specifying a symbol or a single character to be used as the default in plotting points. |
cex |
A numerical value giving the amount by which plotting locations should be magnified to the default. |
col |
A specification for the default plotting color. |
row.names |
NULL or a character vector giving the row names for the data frame. Missing values are not allowed. |
optional |
Logical. If |
... |
Additional parameters to be passed to the generic function |
This function uses data from radio telemetry studyies to compute the location of bearing intersections using basic algebra. These intersections are a key component of the maximum likelihood estimation (MLE) approach described in Lenth (1981) that is used to estimate the location of the transmitter signal in such studies.
The function findintersects
returns an object belonging to the S4 class intersect
Sergey S. Berg berg1546@umn.edu
locate
for additional information on the class transmitter
.
as.receiver
for additional information on the class receiver
1 2 3 4 5 6 7 8 9 | ## Load the data and convert to desired format
data(bear)
bear<-as.receiver(bear)
## Calculate the location of bearing intersections
(cross<-findintersects(bear))
## Display results
plot(cross,xlab="Easting",ylab="Northing")
|
Loading required package: nleqslv
Loading required package: ellipse
GID X Y
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2 1 533449.4 5173325
3 1 533270.1 5173335
4 1 533418.3 5173235
5 1 533449.4 5173325
6 1 533418.3 5173235
7 2 533626.7 5172567
8 2 533643.0 5172580
9 2 533626.7 5172567
10 2 533652.3 5172572
11 2 533643.0 5172580
12 2 533652.3 5172572
13 3 532396.3 5172483
14 3 532355.5 5172431
15 3 532396.3 5172483
16 3 532274.4 5172543
17 3 532355.5 5172431
18 3 532274.4 5172543
19 4 532437.5 5171216
20 4 532836.2 5171475
21 4 532437.5 5171216
22 4 532331.7 5172222
23 4 532836.2 5171475
24 4 532331.7 5172222
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